[TowerTalk] Ground Rods

[Roger D Johnson]

Cqtestk4xs at aol.com wrote:
> In a message dated 5/4/04 3:07:53 PM Greenwich Standard Time, 
> wrt at dslextreme.com writes:
> Does it really matter to a multi-million volt lightning strike whether
> the ground is 300 ohms or five?  The difference would seem to be
> inconsequential.
> Just a guess here........Could it be that the low resistance required is to 
> allow the tower to bleed off the charge easily and thereby reducing the chance 
> of a direct hit?  Is there anybody out there who is more of a tech than I am, 
> who would know for sure?
> 
> Bill K4XS 

There is also a saturation effect. One or two ground rods, no matter
what the resistance reads, may not be capable of dissipating the energy
in a lightning strike.

73, Roger

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